Question

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4z = 3z - 1
8 - a = 18 + a
3b + 5 = 4 - 2b
Necesito el procedimiento y comprobación.

Answer 1

4 z = 3 z -1

4 z - 3 z = -1

z = -1

C O M P R O B A C I Ó N

4 ( - 1 ) = 3 (- 1) - 1

- 4 = -3 -1

-4= -4

8 - a = 18 + a

- a - a = 18 -8

- 2 a = 10

a = 10 / - 2

a = - 5

C O M P R O B A C I Ó N

8 - (-5) = 18 + (-5)

-(-5) -(-5)= 18-8

10=10

3 b + 5 = 4 - 2 b

3 b + 2 b = 4 - 5

5 b = - 1

b = - 1 / 5

b = - .2

C O M P R O B A C I Ó N

3 (-.2) + 5 = 4 - 2 (-.2)

3 (-.2) + 2 (-.2) = 4-5

-0.6 + -0.4 = -1

-1 = - 1